JP2017216897A - Cultivation container-holding tray and cultivation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a heat transfer rate to a cultivation container in controlling a root zone temperature using a temperature control floor.SOLUTION: A cultivation container-holding tray 1 has: a heat insulation panel 2 having a through hole 2a capable of holding the bottom of a pot X in an exposed state; and a metal foil 3 formed from the bottom 2d of the heat insulation panel 2 to a contact surface 2b that comes into contact with a peripheral surface X2 of the pot X of the through hole 2a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cultivation container holding tray and a cultivation system.

  It is known that the growth and flowering of the above-ground part of a plant can be controlled by adjusting the temperature of the root part of the plant (hereinafter referred to as the root area). For example, Patent Document 1 discloses an apparatus for adjusting the root zone temperature. Such an apparatus for adjusting the root zone temperature disclosed in Patent Document 1 adjusts the temperature of the root zone by immersing a pot (cultivation container) filled with soil in a thermostatic water tank.

Japanese Utility Model Publication No. 62-105511

  However, since the apparatus disclosed in Patent Document 1 employs a method of immersing a pot in a constant temperature water tank alone, it is impossible to accommodate and transport a large number of bowls at the same time. Moreover, it is the structure which immerses the pot disclosed by patent document 1 in a constant temperature water tank, and waters a pot from a constant temperature water tank. In this case, irrigation and temperature adjustment of the root zone cannot be controlled separately. Furthermore, since a general plant cultivation facility employs a structure that irrigates the bowl from the overhead, the device disclosed in Patent Document 1 is difficult to introduce in an existing plant cultivation facility.

  As a method for solving the problems of the apparatus disclosed in Patent Document 1, a tray formed of a heat insulating material and capable of holding a large number of bowls is disposed, and a temperature control floor portion is provided below the tray. A configuration to install is conceivable. According to such a configuration, since the tray can hold a plurality of bowls, a large number of bowls can be accommodated by the tray, and a large number of bowls can be moved simultaneously by moving the tray. Moreover, since the tray is formed of a heat insulating material, the bowl is not easily affected by the outside air temperature, and the temperature of the root zone is easily adjusted accurately. Furthermore, since the temperature of the root zone is adjusted by the temperature control floor, it is possible to perform irrigation work on the pot from the overhead separately from the temperature adjustment.

  However, in the configuration using such a temperature control floor, heat transfer between the temperature control floor and the bowl is performed only from the bottom of the bowl. For this reason, heat transfer efficiency is poor, and a lot of energy is required for temperature adjustment of the root zone. Due to the recent increase in environmental awareness, it is desirable to reduce energy consumption as much as possible, and it is necessary to improve the heat transfer rate in a cultivation system that employs a temperature-controlled floor.

  This invention was made | formed in view of the problem mentioned above, and when adjusting root zone temperature using a temperature control floor part, it aims at improving the heat transfer rate to a cultivation container.

  The present invention adopts the following configuration as means for solving the above-described problems.

  1st invention is a cultivation container holding tray, Comprising: The heat insulation panel which has a holding part which can hold | maintain the bottom part of a cultivation container in an exposed state, The side surface of the said cultivation container of the said holding part from the bottom face of the said heat insulation panel, A configuration is adopted in which a heat conducting portion formed so as to reach the abutting surface that abuts is employed.

  According to a second invention, in the first invention, the heat conducting portion is formed along the surface of the heat insulating panel over the entire area from the bottom surface of the heat insulating panel to the contact surface of the holding portion. Adopt the configuration.

  According to a third invention, in the first or second invention, the holding portion penetrates from the top surface of the heat insulation panel to the bottom surface and is reduced in diameter from the top surface of the heat insulation panel to the bottom surface. A configuration is adopted in which the contact surface is a through hole having a tapered surface.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the heat insulating panel includes a plurality of the holding portions.

  5th invention is a cultivation system, Comprising: It has the cultivation container holding tray in any one of the said 1st-4th, and the temperature control floor part which can be temperature-adjusted while arrange | positioning under the said cultivation container holding tray. The configuration is adopted.

  The cultivation container holding tray of the present invention includes a heat conducting portion that extends from the bottom surface of the heat insulating panel that holds the bottom of the cultivation container in an exposed state to the contact surface that contacts the side surface of the cultivation container. For this reason, the calorie | heat amount per unit time transmitted between the bottom face of a heat insulation panel and the side surface of a cultivation container can be made to increase by a heat conductive part. Therefore, when the cultivation container holding tray of the present invention is arranged above the temperature control floor part, the amount of heat per unit time transmitted between the temperature control floor part and the cultivation container by the heat conduction part is increased. Can do. Therefore, according to this invention, in adjusting root zone temperature using a temperature control floor part, it becomes possible to improve the heat transfer rate to a cultivation container.

It is a perspective view of the cultivation container holding tray in one embodiment of the present invention. It is a longitudinal cross-sectional view of the cultivation container holding tray in one Embodiment of this invention. It is a schematic diagram which shows schematic structure of a cultivation system provided with the cultivation container holding tray in one Embodiment of this invention. It is a graph which shows the relationship between elapsed time and actual root zone temperature when the conditions of the preset temperature of a room and a root zone are changed in winter. It is a graph which shows the relationship between elapsed time and actual root zone temperature when the conditions of the root zone preset temperature are changed in summer. It is a graph which shows the flowering rate of a primula at the time of changing the conditions of the setting temperature of the root area of summer.

  Hereinafter, an embodiment of a cultivation container holding tray and a cultivation system according to the present invention will be described with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

  FIG. 1 is a perspective view of the cultivation container holding tray 1 of the present embodiment. Moreover, FIG. 2 is a longitudinal cross-sectional view of the cultivation container holding tray 1 of this embodiment. 2 is a cross-sectional view taken along line AA shown in FIG. The cultivation container holding tray 1 of the present embodiment holds a plurality of pots X (cultivation containers), and as shown in FIGS. 1 and 2, a heat insulating panel 2, a metal foil 3 (heat conduction part), and It has.

  The heat insulation panel 2 is a block-shaped member formed from a heat insulating material. The thickness dimension h of the heat insulation panel 2 is set according to the height dimension of the pot X to be held. In the present embodiment, the thickness dimension h of the heat insulation panel is set to coincide with the height dimension of the bowl X. Moreover, the width dimension w and the depth dimension d of the heat insulation panel 2 are set according to the number of the bowls X arranged in the width direction and the depth direction of the heat insulation panel 2. In the present embodiment, since three bowls X are arranged in the width direction of the heat insulation panel 2, the width dimension w of the heat insulation panel 2 is set to a dimension that allows three bowls X to be arranged. Moreover, in this embodiment, since the five bowls X are arranged in the depth direction of the heat insulation panel 2, the depth dimension d of the heat insulation panel 2 is set to a dimension in which five bowls X can be arranged.

  This heat insulation panel 2 has a plurality of through holes 2a (holding portions) each capable of containing and holding the bowl X. Each through-hole 2a penetrates the heat insulation panel 2 up and down, and the lower end opening has a smaller diameter than the upper end opening. The inner wall surface of such a through-hole 2a is a tapered surface that narrows from the upper end opening toward the lower end opening. That is, in the present embodiment, the through hole 2a has a substantially conical shape that narrows downward.

  The inclination angle of the inner wall surface of the through hole 2a with respect to the vertical axis is substantially the same as the inclination angle of the peripheral surface of the bowl X with respect to the vertical axis. Further, the diameter of the upper end opening of the through hole 2a is substantially the same as the outer diameter of the upper end edge of the bowl X. Moreover, the diameter of the lower end opening of the through hole 2a is substantially the same as the outer diameter of the lower end edge of the bowl X. Such through-holes 2a are arranged at equal intervals in the width direction and the depth direction of the heat insulation panel 2. In the present embodiment, three through holes are arranged in the width direction and five in the depth direction. That is, in this embodiment, the heat insulation panel 2 has a total of 15 through holes 2a.

  When the bowl X is accommodated in each through hole 2a, the bottom X1 of the bowl X is exposed by the lower end opening of the through hole 2a. Further, the inner wall surface (tapered surface) of the through hole 2a is brought into contact with the peripheral surface X2 (side surface) of the bowl X. That is, in this embodiment, the inner wall surface of the through-hole 2a is a contact surface 2b with the peripheral surface X2 of the bowl X.

  Such a heat insulation panel 2 is formed of polystyrene foam (that is, polystyrene foam). In addition, the formation material of the heat insulation panel 2 is not restricted to the heat insulation panel 2, The water-resistant high foamed plastic which has the intensity | strength which can hold | maintain the several bowl X can be used suitably. For example, rigid polyurethane foam, polyethylene foam, polypropylene foam or the like can be used as a material for forming the heat insulation panel 2.

  Thus, the cultivation container holding tray 1 of this embodiment penetrates from the upper surface 2c of the heat insulation panel 2 to the bottom surface 2d, and reduces the diameter from the upper surface 2c of the heat insulation panel 2 toward the bottom surface 2d, thereby contacting the contact surface 2b. Has a plurality of through holes 2a each having a tapered surface. By accommodating the bowl X in such a through-hole 2a, the cultivation container holding tray 1 of this embodiment holds the bowl X.

  As shown in FIG. 2, the metal foil 3 is a metal foil attached along the surface of the heat insulating panel 2 from the bottom surface 2 d of the heat insulating panel 2 to the contact surface 2 b. The metal foil 3 has a higher thermal conductivity than the heat insulating panel 2 and increases the conduction rate of the amount of heat between the contact surface 2b and the bottom surface 2d of the heat insulating panel 2. For this reason, when the temperature control floor 13 is installed below the cultivation container holding tray 1, the heat transfer rate between the temperature control floor 13 and the pot X can be improved through the metal foil 3. For example, when the temperature of the bowl X is lower than the temperature of the temperature control floor 13, the amount of heat is transmitted from the temperature control floor 13 to the peripheral surface X 2 of the bowl X through the metal foil 3. On the other hand, when the temperature of the bowl X is higher than that of the temperature control floor portion 13, the amount of heat is transmitted from the pot X through the metal foil 3 to the temperature control floor portion 13.

  Such a metal foil 3 is formed of an aluminum foil. The metal foil 3 is not limited to the aluminum foil. For example, tin foil or copper foil can be used as the metal foil 3. Moreover, the thickness dimension of the metal foil 3 is not particularly limited, but it is preferably a dimension that does not affect the holding of the bowl X by the through hole 2a of the heat insulating panel 2 (eg, rattling). For example, the thickness dimension of the metal foil 3 is preferably 0.2 mm or less.

  According to the cultivation container holding tray 1 of the present embodiment as described above, the bottom surface 2d of the heat insulating panel 2 that holds the bottom X1 of the pot X in an exposed state reaches the contact surface 2b that contacts the peripheral surface X2 of the pot X. A metal foil 3 is provided. For this reason, the amount of heat per unit time transmitted between the bottom surface 2d of the heat insulating panel 2 and the peripheral surface X2 of the bowl X can be increased by the metal foil 3. Therefore, when the cultivation container holding tray 1 of the present embodiment is disposed above the temperature control floor 13, the amount of heat per unit time transmitted between the temperature control floor 13 and the pot X by the metal foil 3. Can be increased. Therefore, according to the cultivation container holding tray 1 of the present embodiment, it is possible to improve the heat transfer rate to the pot X when adjusting the root zone temperature using the temperature control floor 13.

  Moreover, in the cultivation container holding tray 1 of this embodiment, the metal foil 3 is formed along the surface of the heat insulation panel 2 in the whole region from the bottom face 2d of the heat insulation panel 2 to the contact surface 2b of the through hole 2a. Yes. For this reason, according to the cultivation container holding tray 1 of this embodiment, it can manufacture only by sticking the metal foil 3 on the surface of the heat insulation panel 2. FIG.

  Moreover, in the cultivation container holding tray 1 of this embodiment, while being penetrated from the upper surface 2c of the heat insulation panel 2 to the bottom surface 2d as a holding part holding the pot X, it shrinks toward the bottom surface 2d from the upper surface 2c of the heat insulation panel 2. By having a diameter, the contact surface 2b has a through hole 2a having a tapered surface. According to the cultivation container holding tray 1 of this embodiment having such a configuration, the contact surface 2b which is a tapered surface is brought into contact with the peripheral surface X2 of the bowl X by accommodating the bowl X in the through hole 2a. The bowl X can be held. Therefore, according to the cultivation container holding tray 1 of this embodiment, it becomes possible to hold the pot X with a simple structure.

  Moreover, in the cultivation container holding tray 1 of this embodiment, the heat insulation panel 2 has the several through-hole 2a. For this reason, a plurality of pots X can be held by one cultivation container holding tray 1. Therefore, the plurality of pots X can be easily moved by moving the cultivation container holding tray 1.

  Then, the cultivation system 10 provided with the cultivation container holding tray 1 of this embodiment is demonstrated with reference to FIG.

  FIG. 3 is a schematic diagram illustrating a schematic configuration of the cultivation system 10. As shown to this figure, the cultivation system 10 has the bench 11, the heat insulation support plate 12, the temperature control floor part 13, the temperature control water production | generation apparatus 14, and the some cultivation container holding tray 1. As shown in FIG. .

  The bench 11 is a base that directly or indirectly supports the heat insulating support plate 12, the temperature control floor 13, and the cultivation container holding tray 1. The bench 11 includes a bottom portion 11a having a rectangular shape in plan view on which the heat insulating support plate 12 is placed, and a side wall 11b standing on an edge of the bottom portion 11a. The side wall 11b is formed on all four sides of the rectangular bottom 11a, and has a height that surrounds the temperature control floor 13 and the lower part of the cultivation container holding tray 1 from the side as shown in FIG. Yes.

  This bench 11 is formed of a heat insulating material, similarly to the heat insulating panel 2 of the cultivation container holding tray 1. For example, the bench 11 can be formed of foamed plastic such as polystyrene foam, rigid polyurethane foam, polyethylene foam, and polypropylene foam. Such a bench 11 prevents the space surrounded by the side wall 11b from being affected by the outside air temperature.

  The heat insulating support plate 12 is placed on the bottom 11a of the bench 11 and supports the temperature control floor 13 from below. The heat insulating support plate 12 adjusts the height position of the temperature control floor 13. For this reason, when it is not necessary to adjust the height position of the temperature control floor part 13, it is also possible to abbreviate | omit. Similar to the bench 11, the heat insulating support plate 12 can be formed of foamed plastic such as polystyrene foam, rigid polyurethane foam, polyethylene foam, and polypropylene foam.

  The temperature control floor 13 is placed on the heat insulating support plate 12 and supports the cultivation container holding tray 1 from below. That is, in the cultivation system 10, the temperature control floor 13 is disposed below the cultivation container holding tray 1. This temperature control floor 13 is temperature-adjustable by changing the temperature of the temperature control water Y supplied from the temperature control water production | generation apparatus 14, and is the pot X (namely, hold | maintained with the cultivation container holding tray 1). Adjust the temperature of the root zone. Such a temperature control floor 13 has a water pipe (not shown). The temperature of the pot X is adjusted by heat-exchanging the temperature-controlled water Y supplied to the water pipe and the pot X supported by the cultivation container holding tray 1 in a non-contact manner. For example, in winter, the pot X is heated by supplying warm water as the temperature control water Y to the temperature control floor 13. Moreover, in summer, the pot X is cooled by supplying cold water as the temperature control water Y to the temperature control floor 13.

  The temperature control water generation device 14 is connected to the temperature control floor unit 13, adjusts the temperature of the temperature control water Y collected from the temperature control floor unit 13, and supplies the temperature control water unit 13 to the temperature control floor unit 13 again. For example, in the winter season, the temperature adjustment water generation device 14 collects and heats the temperature adjustment water Y cooled by heating the pot X from the temperature adjustment floor portion 13, and then again adjusts the temperature adjustment floor portion 13. To supply. Moreover, if it is summer, the temperature control water production | generation apparatus 14 will collect | recover the temperature adjustment water Y heated by cooling the bowl X from the temperature adjustment floor part 13, it will cool, and will again be in the temperature adjustment floor part 13 here. Supply.

  The cultivation container holding tray 1 is placed on the temperature control floor 13. For example, a total of 15 cultivation container holding trays 1 are arranged adjacent to each other on the temperature control floor 13 in the vertical and horizontal directions. As shown in FIG. 3, these cultivation container holding trays 1 have a lower half on the side wall 11b so that at least a plant root region (root area) is accommodated in a space surrounded by the side wall 11b of the bench 11. It arrange | positions so that it may become lower than the upper end of. In the cultivation system 10 shown in FIG. 3, the cultivation container holding tray 1 is directly placed on the temperature control floor 13, but there is a gap between the cultivation container holding tray 1 and the temperature adjustment floor 13. May be provided.

  Although not shown in FIG. 3, the cultivation system 10 may be provided with a water supply facility for irrigating the pot X above the cultivation container holding tray 1. By providing such a water supply facility, it becomes possible to easily perform irrigation work for a large number of pots X.

  In such a cultivation system 10, the pot X is not affected by the external temperature by the heat insulating panel 2 of the cultivation container holding tray 1. On the other hand, the lower part of the bowl X becomes a temperature corresponding to the set temperature of the temperature control floor 13 by exchanging heat with the temperature control floor 13 directly or through the metal foil 3. Therefore, according to the cultivation system 10, it becomes possible to adjust the root area of the plant grown in the pot X to a temperature suitable for cultivation.

  Furthermore, in the cultivation system 10, the temperature of the root region of the plant can be adjusted without immersing the pot X in the thermostatic water tank. For this reason, watering with respect to the pot X can be performed separately from the temperature control of the root zone. Therefore, according to the cultivation system 10, it becomes possible to perform the irrigation work suitable for plant growth without being influenced by the temperature adjustment of the root region.

  Moreover, according to the cultivation system 10, since it is only a root area that adjusts temperature, compared with the case where the whole room | chamber interior which grows a plant is temperature-controlled, the energy consumption required for temperature adjustment is extremely It can be reduced.

  Then, with reference to FIGS. 4-6, the Example at the time of actually growing a plant with the cultivation system 10 using the cultivation container holding tray 1 of this embodiment is demonstrated. In this example, primula was grown.

  FIG. 4 is a graph showing the relationship between the elapsed time and the actual root zone temperature when the set temperature conditions for the room and the root zone are changed in winter. In FIG. 4, graph A shows the result when the room temperature is not heated and the root zone temperature is set to 25 ° C. by the cultivation system 10. Moreover, the graph B has shown the result at the time of setting indoor temperature to 12 degreeC and setting root zone temperature to 24 degreeC by the cultivation system 10. FIG. Moreover, the graph C has shown the result at the time of setting indoor temperature to 15 degreeC, without using the cultivation container holding tray 1 and the cultivation system 10. FIG. In FIG. 4, the horizontal axis indicates elapsed time, and one scale on the horizontal axis corresponds to one day.

  As is apparent from the graph C, when the root zone temperature is not adjusted without using the cultivation system 10, the root zone temperature varies greatly during the day even if the room temperature is adjusted. . On the other hand, as is clear from the graph A and the graph B, the root zone temperature can be prevented from changing during one day by using the cultivation system 10. Further, as can be seen from the comparison between the graph A and the graph B, it can be seen that by using the cultivation system 10, it is possible to prevent fluctuations in the root zone temperature without adjusting the room temperature. Thus, by using the cultivation system 10, it has been confirmed that the root zone temperature can be kept constant without adjusting the temperature of the room temperature.

  FIG. 5 is a graph showing the relationship between the elapsed time and the actual root zone temperature when the root zone set temperature condition is changed in summer. In FIG. 5, the graph D has shown the result at the time of setting root zone temperature to 20 degreeC by the cultivation system 10. FIG. Moreover, the graph E has shown the result at the time of setting root zone temperature to 23 degreeC by the cultivation system 10. FIG. Moreover, the graph F has shown the result at the time of setting root zone temperature to 26 degreeC by the cultivation system 10. FIG. Moreover, the graph G has shown the result when not using the cultivation container holding tray 1 and the cultivation system 10. FIG. In FIG. 4, the horizontal axis indicates elapsed time, and one scale on the horizontal axis corresponds to one day.

  As is apparent from the graph G, when the root zone temperature is not adjusted without using the cultivation system 10, the root zone temperature varies greatly during one day. On the other hand, as is clear from the graphs D to F, when the cultivation system 10 is used, the root zone temperature can be stabilized in the vicinity of the set temperature. As described above, by using the cultivation system 10, the root zone temperature can be kept constant even in summer.

  FIG. 6 is a graph showing the flowering rate of primula when the condition of the set temperature of the root zone in summer is changed. In FIG. 6, the graph H has shown the result at the time of setting the root zone temperature of summer in the cultivation system 10 to 20 degreeC. Moreover, the graph I has shown the result at the time of setting the root zone temperature of summer in the cultivation system 10 to 23 degreeC. Moreover, the graph J has shown the result at the time of not using the cultivation container holding tray 1 and the cultivation system 10 in the summer. In FIG. 6, the horizontal axis indicates the elapsed time, and one scale on the horizontal axis corresponds to one week.

  As is apparent from the graphs H to J, when the temperature of the root zone temperature is kept constant by the cultivation system 10 in the summer, the flowering rate may be very high compared to the case where the cultivation system 10 is not used. confirmed. Furthermore, as is clear from graph H and graph I, it was found that the flowering rate was increased by keeping the root zone temperature low in summer.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the spirit of the present invention.

  For example, in the said embodiment, the structure which uses the metal foil 3 as a heat conductive part of this invention was employ | adopted. However, the present invention is not limited to this, and it is also possible to adopt a configuration in which a metal plate or metal block having a thickness dimension larger than that of the metal foil 3 is provided as the heat conducting portion.

  Moreover, in the said embodiment, the structure by which the metal foil 3 which is a heat conductive part of this invention was affixed on the surface of the heat insulation panel 2 was employ | adopted. However, the present invention is not limited to this, and adopts a configuration in which the heat conducting portion passes through the inside of the heat insulating panel 2 and extends from the bottom surface 2d of the heat insulating panel 2 to the contact surface 2b. Is also possible.

  Moreover, in the said embodiment, the structure which the temperature control floor part 13 adjusts temperature with the temperature control water Y was demonstrated. However, the present invention is not limited to this, and it is also possible to adopt a configuration in which the temperature adjusting floor 13 adjusts the temperature with the temperature adjusting gas.

  Moreover, in the said embodiment, the holding | maintenance part of this invention demonstrated the structure which consists of the through-hole 2a. However, this invention is not limited to this, For example, the heat insulation panel 2 can provide an arm part etc., and the said arm part can also be used as a holding | maintenance part of this invention.

  DESCRIPTION OF SYMBOLS 1 ... Cultivation container holding tray, 2 ... Heat insulation panel, 2a ... Through-hole (holding part), 2b ... Contact surface, 2c ... Upper surface, 2d ... Bottom surface, 3 ... Metal foil (Heat conduction part) ) 10 ... Cultivation system, 13 ... Temperature control floor, X ... Pot (cultivation container), X1 ... Bottom, X2 ... Peripheral surface (side), Y ... Temperature control water

Claims (5)

A heat insulating panel having a holding part capable of holding the bottom part of the cultivation container in an exposed state;
A cultivation container holding tray, comprising: a heat conduction part formed from a bottom surface of the heat insulating panel to a contact surface of the holding part that contacts the side surface of the cultivation container.   The cultivation container holding tray according to claim 1, wherein the heat conducting part is formed along the surface of the heat insulating panel in the entire region from the bottom surface of the heat insulating panel to the contact surface of the holding part. .   The holding portion is a through-hole that penetrates from the top surface of the heat insulation panel to the bottom surface and has a diameter that decreases from the top surface of the heat insulation panel toward the bottom surface so that the contact surface is a tapered surface. The cultivation container holding tray according to claim 1 or 2, characterized by the above.   The cultivation container holding tray according to any one of claims 1 to 3, wherein the heat insulation panel has a plurality of the holding parts. The cultivation container holding tray according to any one of claims 1 to 4,
A cultivation system comprising: a temperature-adjusting floor portion that is disposed below the cultivation container holding tray and capable of adjusting a temperature.

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